Circular saw with an improved lower blade guard

Details Circular saw with an improved lower blade guard Circular saw with an improved lower blade guard

2006-08-15

2006-08-15

Dexter, Clark F. (Department: 3724)

Cutlery

Cutting tools

Saw

C030S374000, C030S390000

Reexamination Certificate

active

07089671

ABSTRACT:
A circular saw (1) includes a base plate (2) and a saw blade assembly (3) including a lower blade guard (9) for covering a saw blade (6). The blade guard includes a sleeve portion (10) rotatably fitted on a bearing box (8) coupled to the saw blade assembly and a sectoral portion (11) extending radially from the sleeve portion in the rear of the blade. A connecting bar (13) projects radially rearward from the sectoral portion. A spring (14) is stretched between the top of the connecting bar (13) and a lower rear portion of an upper blade guard (4) close to the base plate. When not in use, torque, generated as the product of the spring's tensile force and the perpendicular distance (S) from the line of action or the force to the axis of rotation (O), rotates the blade guard to a closed position.

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